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Oval|Natural|IGI

1.51ct G I1 Oval Natural Diamond

VG • G/I1 • IGI 633443021

Shape and cutting style on the report: Oval brilliant

Certificate IGI 633443021

Diamond specifications and retailer prices

From £1,515 GBP
$2,030 USD
As of November 1, 2026
Save £2,459 GBP (62%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,974 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and I1 clarity (included), with a very-good cut grade and certified by IGI 633443021. Listed at 9 retailers as of October 30, 2026, with prices from £1,515 to £3,974, a £2,459 spread on the same certified stone. NZ Jewellers lists it at £3,974. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.8°
Pavilion angle39.4°
OriginNatural
Grading LabIGI
CertificateIGI 633443021
Dimensions8.50 × 6.36 × 4.18 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Top View
8.50 mm6.36 mm1.51 ctG / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 633443021
Side View
Table 58.0%Crown 36.8°Girdle: THK-VTKPavilion 39.4°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,974 GBP|Low: £1,154 GBP|High: £3,974 GBP|Avg: £1,872 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4£1,154 GBP
Retailer 3£1,352 GBP
Retailer 7£1,515 GBP
Retailer 10£1,556 GBP
Retailer 9£1,590 GBP
Retailer 5£1,722 GBP
Retailer 11£1,722 GBP
Retailer 6£1,802 GBP
Retailer 8£1,987 GBP
Retailer 12£2,262 GBP
Retailer 2£2,374 GBP
NZ Jewellers£3,974 GBP

23 data points across 12 retailers

9 retailers£1,515 GBP to £3,974 GBP

A
Cheapest Retailer
-
£1,515 GBP
$2,030 USD
A
Retailer 2
-
£1,556 GBP
$2,085 USD
View
B+
Retailer 3
-
£1,590 GBP
$2,130 USD
View
Final sale: no returns
B+
Retailer 4
-
£1,722 GBP
$2,307 USD
View
B+
Retailer 5
-
£1,722 GBP
$2,307 USD
View
B+
Retailer 6
-
£1,802 GBP
$2,414 USD
View
B+
Retailer 7
-
£1,987 GBP
$2,662 USD
View
B+
Retailer 8
-
£2,374 GBP
€3,029 EUR
View
Most Expensive
B+
NZ Jewellers
e67fd79e-422a-447c-837f-ecca411ad1ec · Oct 30
£3,974 GBP
$5,325 USD
View
8 more retailers have this diamond
Prices start from £1,515 GBPSave up to £2,459 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Oval
£1,515 GBP